For years Joe Biden has told audiences, "This is not your father's Republican Party." He's right. And perhaps nothing better illustrates the shift than the party's eroding support for America's global role as leader of the free world and its embrace of Vladimir Putin's Russia.
Russia's year-old war on Ukraine is the crucible that will test which strain could come to define the 21st century Republican Party: its traditional internationalism or "America First" isolationism. Let's hope it's the former, for the sake of the nation and the international order.
When Democrats controlled the White House and Congress, Republicans mostly could stay on the sidelines of the Ukraine debate. But now they're forced on two fronts to take a stand: The Republican controlled House will have to act on Biden's all-but-certain requests for more Ukraine aid. And in the emerging contest for a 2024 presidential standard-bearer, voters will likely face a choice between isolationists and the alternatives.
